what is the meaning of a coral reef are they formed by the remains of dead animals No. Coral reefs are formed by the skeletons of coral animals.
The coral reef is a large marine ecosystem found in most tropical and subtropical waters. It is made up of coral polyps that build reefs by depositing calcium carbonate to form a hard structure. Coral reefs provide protection from waves and storms and serve as habit shelter for a wide variety of marine life. Coral reefs are important for the ocean's biodiversity and are vital to the health of the ocean ecosystem.